Plasmonically driven photocatalytic hydrogen evolution activity of a Pt-functionalized Au@CeO2 core-shell catalyst under visible light

Dung Van Dao; Thuy T.D. Nguyen; Thanh Duc Le; Seung Hyeon Kim; Jin Kyu Yang; In Hwan Lee; Yeon Tae Yu

doi:10.1039/d0ta00811g

Plasmonically driven photocatalytic hydrogen evolution activity of a Pt-functionalized Au@CeO₂ core-shell catalyst under visible light

Dung Van Dao, Thuy T.D. Nguyen, Thanh Duc Le, Seung Hyeon Kim, Jin Kyu Yang, In Hwan Lee, Yeon Tae Yu

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

A ternary hybrid photocatalyst consisting of Au@CeO₂ core-shell nanostructures coated with ultralow Pt-functionalized surface contents (Au@CeO₂-Pt) was synthesized using a facile hydrothermal method. The Pt-decorated Au@CeO₂ core-shell photocatalyst had a large Brunauer-Emmett-Teller (BET) surface area (86.50 m² g^-1) with an abundance of catalytically active sites. The hydrogen production rate over Au@CeO₂-Pt under visible light (8.7 μmol mg^-1 h^-1) was much higher than that observed over binary Au@CeO₂ (3.9 μmol mg^-1 h^-1) and pure CeO₂ (0.9 μmol mg^-1 h^-1) catalysts. Enhancement of the hydrogen evolution reaction (HER) was attributed mainly to the surface plasmon resonance (SPR) effect of the Au cores, which was highly advantageous for light absorption and conversion. In addition, the Pt co-catalyst served as an electron sink that accepted photogenerated electrons migrating from the Au@CeO₂ core-shells. This extended the lifetime of the photogenerated charge carriers and resulted in HER activity that was superior to that of the Pt-free photocatalysts. The large BET surface area of the ternary core-shell nanostructure and the presence of many catalytically active sites also enhanced the HER performance.

Original language	English
Pages (from-to)	7687-7694
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	8
Issue number	16
DOIs	https://doi.org/10.1039/d0ta00811g
Publication status	Published - 2020 Apr 28

Bibliographical note

Funding Information:
This work was supported by the BK21 Plus program of the Ministry of Education and Human-Resource Development of South Korea and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (BRL No. 2015042417, 2016R1A2B4014090, 2017R1A2B3006141, 2017R1A2B4012181).

Publisher Copyright:
© 2020 The Royal Society of Chemistry.

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1039/d0ta00811g

Cite this

@article{e2aa9350e65b4dd2b64cd4c1fc9d7753,

title = "Plasmonically driven photocatalytic hydrogen evolution activity of a Pt-functionalized Au@CeO2 core-shell catalyst under visible light",

abstract = "A ternary hybrid photocatalyst consisting of Au@CeO2 core-shell nanostructures coated with ultralow Pt-functionalized surface contents (Au@CeO2-Pt) was synthesized using a facile hydrothermal method. The Pt-decorated Au@CeO2 core-shell photocatalyst had a large Brunauer-Emmett-Teller (BET) surface area (86.50 m2 g-1) with an abundance of catalytically active sites. The hydrogen production rate over Au@CeO2-Pt under visible light (8.7 μmol mg-1 h-1) was much higher than that observed over binary Au@CeO2 (3.9 μmol mg-1 h-1) and pure CeO2 (0.9 μmol mg-1 h-1) catalysts. Enhancement of the hydrogen evolution reaction (HER) was attributed mainly to the surface plasmon resonance (SPR) effect of the Au cores, which was highly advantageous for light absorption and conversion. In addition, the Pt co-catalyst served as an electron sink that accepted photogenerated electrons migrating from the Au@CeO2 core-shells. This extended the lifetime of the photogenerated charge carriers and resulted in HER activity that was superior to that of the Pt-free photocatalysts. The large BET surface area of the ternary core-shell nanostructure and the presence of many catalytically active sites also enhanced the HER performance.",

author = "{Van Dao}, Dung and Nguyen, {Thuy T.D.} and Le, {Thanh Duc} and Kim, {Seung Hyeon} and Yang, {Jin Kyu} and Lee, {In Hwan} and Yu, {Yeon Tae}",

note = "Funding Information: This work was supported by the BK21 Plus program of the Ministry of Education and Human-Resource Development of South Korea and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (BRL No. 2015042417, 2016R1A2B4014090, 2017R1A2B3006141, 2017R1A2B4012181). Publisher Copyright: {\textcopyright} 2020 The Royal Society of Chemistry.",

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T1 - Plasmonically driven photocatalytic hydrogen evolution activity of a Pt-functionalized Au@CeO2 core-shell catalyst under visible light

AU - Van Dao, Dung

AU - Nguyen, Thuy T.D.

AU - Le, Thanh Duc

AU - Kim, Seung Hyeon

AU - Yang, Jin Kyu

AU - Lee, In Hwan

AU - Yu, Yeon Tae

N1 - Funding Information: This work was supported by the BK21 Plus program of the Ministry of Education and Human-Resource Development of South Korea and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (BRL No. 2015042417, 2016R1A2B4014090, 2017R1A2B3006141, 2017R1A2B4012181). Publisher Copyright: © 2020 The Royal Society of Chemistry.

PY - 2020/4/28

Y1 - 2020/4/28

N2 - A ternary hybrid photocatalyst consisting of Au@CeO2 core-shell nanostructures coated with ultralow Pt-functionalized surface contents (Au@CeO2-Pt) was synthesized using a facile hydrothermal method. The Pt-decorated Au@CeO2 core-shell photocatalyst had a large Brunauer-Emmett-Teller (BET) surface area (86.50 m2 g-1) with an abundance of catalytically active sites. The hydrogen production rate over Au@CeO2-Pt under visible light (8.7 μmol mg-1 h-1) was much higher than that observed over binary Au@CeO2 (3.9 μmol mg-1 h-1) and pure CeO2 (0.9 μmol mg-1 h-1) catalysts. Enhancement of the hydrogen evolution reaction (HER) was attributed mainly to the surface plasmon resonance (SPR) effect of the Au cores, which was highly advantageous for light absorption and conversion. In addition, the Pt co-catalyst served as an electron sink that accepted photogenerated electrons migrating from the Au@CeO2 core-shells. This extended the lifetime of the photogenerated charge carriers and resulted in HER activity that was superior to that of the Pt-free photocatalysts. The large BET surface area of the ternary core-shell nanostructure and the presence of many catalytically active sites also enhanced the HER performance.

AB - A ternary hybrid photocatalyst consisting of Au@CeO2 core-shell nanostructures coated with ultralow Pt-functionalized surface contents (Au@CeO2-Pt) was synthesized using a facile hydrothermal method. The Pt-decorated Au@CeO2 core-shell photocatalyst had a large Brunauer-Emmett-Teller (BET) surface area (86.50 m2 g-1) with an abundance of catalytically active sites. The hydrogen production rate over Au@CeO2-Pt under visible light (8.7 μmol mg-1 h-1) was much higher than that observed over binary Au@CeO2 (3.9 μmol mg-1 h-1) and pure CeO2 (0.9 μmol mg-1 h-1) catalysts. Enhancement of the hydrogen evolution reaction (HER) was attributed mainly to the surface plasmon resonance (SPR) effect of the Au cores, which was highly advantageous for light absorption and conversion. In addition, the Pt co-catalyst served as an electron sink that accepted photogenerated electrons migrating from the Au@CeO2 core-shells. This extended the lifetime of the photogenerated charge carriers and resulted in HER activity that was superior to that of the Pt-free photocatalysts. The large BET surface area of the ternary core-shell nanostructure and the presence of many catalytically active sites also enhanced the HER performance.

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